* A misspelling: It could be a misspelling of a known word. For example, it might be a misspelling of "zargon", which could refer to a fictional language or a technical term.
* A regional word: It might be a word used in a specific region or culture, but not widely known.
* A made-up word: It could be a word someone invented.
To help me understand what you mean, please provide more context:
* Where did you encounter this word? (e.g., in a book, a conversation, online)
* What was the context of its use? (e.g., what was being discussed or described?)
With more information, I can hopefully figure out what "zarghoon" means for you.